Carbureter.



where the mixing Fig. 1.

FTQ

LOUIS A. PAZANDAK, 0F MINNEAPOLIS, MINNESOTA.

CARBURETER.

Specification of Letters Patent.

Patented Nov. ai, rare.

Application filed January 2, 1915. Serial No. 104.

To all whom it may concern..-

Be it known thatl, LoUIs A. PAZANDAK, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inCarbureters, of which the following is a specification.

My invention relates to carbureters and has for its object to provide acarbureter wherein the gas from the fuel will be generated by heat,preferably from the exhaust of the engine, before any part of the fuelcomes into contact with the air with which it is mixed. The generatedgas is delivered into the mixing chamber as a pure gas and thereencounters the incoming stream of air, is completed and from which theexplosive mixture passes to the engine.

It is also an object of my invention to provide an automatic air-intakein connection with the mixing chamber which will admit air in amountsproportional to the vacuum created by the engine that is proportional tothe speed of the engine.

A further object of my invention is to provide means for injecting steaminto the current of air supplied to the mixing chamber before said airencounters the generated fuel, and I accomplish the generation of thesteam in-the same manner as the generation of the fuel; that is, I carrywater through a pipe of sufficient size whic extends through the heatingchamber, which, as above pointed out, is preferably formed in theexhaust passageway of the engine, where the heat of the exhaust gasesmay be utilized for the purpose of generating both the fuel gas and thesteam.

The full objects and-advantages .of my invention will appear inconnection with the detailed description thereof and are particularlypointed out in the claims.

In the drawings, illustrating the applicaf tion of my invention in oneform, Figure 1 is aisectional view of the carbureter embodying the rinciles of my invention. Fig. '2' is a section ta (en on line'2 -2 of Fg. 1. Fig. 3 is a section taken on l1ne33 of As illustrated, a casing 10is provided which may be cast integrally or may comprise the mainportion 10 and a separate portion 11 bolted to the casing 10,asindicated in Fig. 3. The casing comprises a fuel chamber 12, a mixingchamber 13 and an intermedlate heating chamber 14. As illustrated, thechamber 14 is formed in conjunction wlth the exhaust pipe 15, so thatthe exhaust gases of the engine must pass through said chamber 14. Themixing chamber 13 has a conically expanded lower wall 16 which extendsinto a pipe 17 openmg through an aperture 18 for the admission of airmto the mixing chamber 13. A delivery pipe 19 leads from the mixingchamber 13 to the manifold or engine cylinder and may be controlled tothe extent desired by butterfly valve 20. The fuel in chamber-12 is keptat a fixed level 21 by means of a float 22 which controls the inletvalve 23.

Extending across heating chamber 14 is a pipe 24, whlch may, if desired,be oval in cross section, as shown in Fig. 2, and may be provided with aseries of flanges 25 to increase the heat absorbing capacity of saidplpe. The chamber 14 is provided with an aperture 27 the bottom of whichis just belowthe normal fixed level 21 of the fuel in the mixingchamber. Another aperture 28 extends from aperture 27 into the interiorof pipe 24 and is controlled by a needle valve 29 operated bymanually-controlled means such as the hand nut 30. The pipe 24 has aportion 31 thereof which extends within the pipe 17 and is provided withan upstanding cone-shaped portion 32 formed with a delivery aperture 33at the center thereof. It

will be seen that the outer walls of the cone- .sition said valveengages with its inner ed es the walls of the conical portion 32.

he ring valve 34 is connected by means. of arms 36, 37 with a collar 38slida-ble upon 'a' p n 39 which is secured to a screw bolt 40 threadedintov the casing which closes the top of mix- ..ing'chamber 13. The bolt40 is provided with "ashoulder 41 adjacent the junction of said boltwith the pin 39, and this shoulder may be positioned relative to collar38 by means ofscrewing the bolt 40. A spring 42' 11a loosely surroundsthe pin 39 and resting. at

from shoulder 41.

The valve mechanism above described is operated by the suction inducedby the engine, which lifts the valve ring 34 a distance proportional tothe vacuum caused by such suction. The first part of the liftingmovement is effected against gravity alone, collar 88 and spring 42sliding freely upon pin 39, the collar constraining the valve ring 34 tomove vertically. As the suction force increases the valve may be movedto compress the spring 42, and the ratio of compression to a givenmovement of the valve is, of course, controlled or adjusted by means ofthe screw 40. Since the walls surrounding the inner and outer edgesofthe ring valve 34 are diverging any movement of the valve from itsseat will open the air passageway, and this openingw ll be progressivelyincreased in proportion to the extent of movement of the valve. By thismeans a control of the air is effected by a single valve and without thenecessity of primary and secondary air passageways, as is commonlyemployed.

As is well-known, certain types of fuel oils, particularly heavy oils,provide a much better explosive mixture if a certain percentage of steamr water vapor is pres ent in the mixture. In my construction 1 am ableto obtain this water vapor in the form of steam by extending awater-pipe 43 through the heating chamber 14 and across the airpassageway 17 the flow of water into said pipe being controlled by avalve 44. Steam will be generated in the heating chamber which will passthrough apertures into the air passageway.

The manifold advantages of my invention are clear. The generation of thefuel gas is effected entirely by heat. The heating pipe 24, subject asit is to the exhaust gases, will become so hot that the fuel whichescapes through the opening 33 will be a perfect gas before admixturewith the air from chamber 18. The air itself will be very slightlywarmed in passing over the portion81 of the'heater pipe 24 which extendswithin the air passageway, and said air will bear the proper proportionof water vapor in the form of steam injected through apertures 45 intothe current ofair. The mixture of air and generated gas effected in themixing chamber 13, including as it does the right proportion of watervapor, will be highly efficient to produce a most effective explosiveits lower end upon the collar 38 and being spaced at its upper end asuitable distance compound. There is no possibility of loss of fuel orof flooding the manifold or engine cylinders, because the fuel oil isall gasitied before the same comes into the current of air and no dropsor particles of condensed liquids can be carried into the dischargepipe.

I claim:

1. A carbureter comprising a casing having a fuel'chamber, an outlet atthe side of said fuel chamber, an expanded horizontal ovalpassagewaycommunicating with said outlet, a second casing attached tothe first and forming a chamber inclosing said passageway for directingthe engine exhaust gases downwardly against said passageway to vaporizethe fuel within, an upwardlyprojecting nozzle on the end of saidpassageway, anair intake passageway below and about said nozzle, amixing chamber formed in said casing above said nozzle, and means to mixand distribute the heated carbureted air.

2. A carbureter comprising a casing formed with a fuel chamber a mixingchamber and an intermediate chamber forming a portion of the exhaustpassageway of the engine, a generator member extending across theintermediate chamber and having communication at one end with the fuelchamber andat the other end with the mixing chamber, said mixing chamberhaving a passageway for admitting air past the opening into thegenerator,'and a water pipe extending through the intermediate chamberand into the air passageway and having apertures for the delivery ofsteam into said air passageway.

3. A carbureter comprising a fuel chamber, a mixing chamber, means fordelivering fuel from the fuel chamber into the mixing chamber, means foradmitting a current of air into and through the mixing chamber inducedby the action of the engine, means for heating the fuel oil as it passesfrom the fuel chamber to the mixing chamber, whereby said oil isgenerated into a gas and said generated gas is delivered into thecurrent of air in the mixing chamber, and a water supply pipe subject tosaid heating means and having apertures for delivery into said currentof air of steam generated by said heating means.

In testimony whereof I atfix my signature in presence of two witnesses.

LOUIS A. PAZANDAK. Witnesses F. A. VVHITELEY, H. A. BOWMAN.

